Cycloidal milling-machine.



G. WIEBKE.

CYCLOIDAL MILLING MACHINE.

APPLICATION FILED me. 3, 190B.

Patented Sept. 28, 1909.

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GYGLOIDAL MILLING MACHINE.

APPLICATION FILED DEC]. 3, 1908.

935,345. Patented Sept. 28, 1909.

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APPLICATION FILED DEC. 3, 1908.

Patented Sept. 28, 1909.

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UNITED STATES PATENT ()FFTGE.

CHARLES WIEBKE, OF NEWARK, NEW JERSEY.

CYGLOIDAL MILLING-MACHINE.

To all whom it may concern- Be it known that 1, CHARLES 115mm, a citizenof the United States, residing at Newark, in the county of Essex andState of New Jersey, have invented a certain new and useful Improvementin Cycloidal Milling-Machines, of which the following is aspecification, reference being had therein to the accompanying drawings,forming part thereof.

My invention relates to milling machines and particularly to machinesfor milling or cutting on cylindrical surfaces to produce embossing ortinting rollers for embossing figures or designs.

Broadly, my invention comprises means whereby figures may be cut oncylindrical work by developing or presenting a cylindrical surface ofthe work at all times substantially in the plane of a revolving cuttingtool. By these means a design may be cut with facility upon acylindrical surface, with an assurance that the exact design out uponthe cylindrical surface will be reproduced upon the embossed surface, inthe operation of the embossing or tinting rollers thus cut. -Ieretoforeit has been customary to engrave such figures by hand, a processentailing great time and expense. According to my, invention thecylindrical work is given a compound movement equivalent to rolling italong its pitch face plane of rotation of the cutting tool. In thismovement each point of the cylindrical work describes a eycloidal curveand the cylindrical work is developed before the cutting tool.

An object of my invention is to provide means for accomplishing theforegoing result in a simple and thoroughly effective manner.

Another object is to provide means for determining the degree ofrotative adjustment of the work.

Other objects and advantages of my invention will appear from thefollowing description.

I shall now describe my invention wit-h reference to the accompanyingdrawings and shall thereafter point out my invention in claims.

Figure l is an elevation partly in section showing my device inconnection with a milling machine. Fig. 2 a plan .view of Specificationof Letters Patent.

Application filed December 3, 1908.

substantially in the Patented Sept. 28, 1909. Serial No. 465,838.

my device on a larger scale than Fig. 1 with the work removed. Fig. 3 isa vertical sec tion of my device on a plane indicated by the line 33 ofFig. 2. Fig. 4 is a similar section taken on the line 44 of Fig. 2.Figs. 5, 6 and 7 are views of a female roller cut 011 my machine. Fig. 5is a central horizontal section, Fig. 6 is a central vertical section,and Fig. 7 is an elevation. Fig. 8 is an enlarged detail of an indexingplug. Figs. 9, 10 and 11 are views similar to Figs. 5, 6 and 7, showingthe male rollers cut by my machine. Fig. 12 is a detail of the racksupport in side elevation with the rack in section. Fig. 13 is a detailend elevation of the same.

In the embodiment of my invention shown in the drawings, I employ anarbor or stud 11 journaled in the center of the base of the workcarriage 12, the arbor 11 having near its upper end a collar 13 integraltherewith. Mounted on the arbor 11 and bearing on the collar 13 andconcentric therewith is the cylindrical table or indexing plate 14attached to the collar 13, as by the screws 15, so as to be rotated withthe arbor 11. Encircling the index plate 14 is a worm wheel 10 meshingwith and rotated by the worm 17, the bearings of which are the arms 18extending upward from the base 12. The spokes of the worm wheel 16comprise the four arms 19, which are cast integral with the worm wheeland are mounted on the arbor 11 and rest on the plate 14, and the armsor spokes extend past the periphery of the plate 14 and support the wormwheel 16 in position; and clamping bolts 20, extending through the endsof two of the arms and through the worm wheel, have claws extendingunder the plate 14 and are adapted, when clamped, to lock together theplate 14 and the worm wheel 16. In the top of the arbor 11 is journaledthe work-holding spindle 21, and a carrier 22 is secured thereto andrests 011 the arms 19 when the spindle is in its bearing in the arbor11. The carrier 22 is provided with pins 23 adapted to fit into holes inthe arms 19, thus securing the parts together so that the work isrotated with the plate 14 and worm wheel 16 by the worm 17. The work 24is clamped on the spindle 21 by clamping rings and a nut, as shown, andthe screw 25, locked in place by the set-screw 21), serves as the topbearing for the spindle.

The screw 25 has its bearing in the crosspiece 27, which is supported onthe upright arms 28 of the carriage 12'.

It. is necessary for the successful operation of my device that, as thework is rotated by the worm 17, as above described, it shall be carriedalong as though rolled on its pitch surface before the tool, that is, itmust be bodily moved a distance substantially equal" to the length ofthearc of movement of a pointin the periphery of its pitch circle. For thispurpose a gear wheel 29, of a pitch circle corresponding to the pitchcircle of the work, is mounted on the arbor 11 to rotate therewith,being keyed thereto as shown, and cooperates with a rack 30. A nut 32 onthe arbor 11 serves to clamp the gear wheel 29 up against the collar 13of the arbor. A strengthening plate 33 bridging across the carriage, asshown, provides a bearing for the collar 13 to steady the rotatingparts. The carriage 12 is provided with a dovetail groove extendingparallel to the rack, and the supporting base 34 has a correspondingtongue fitting therein, thus furnishing a guide whereby the carriage mayslide back and forth before the cutting tool 31. It .is now evident thatas the worm 17 is turned, with the bolts 20 clamped, all of the partsmounted on the spindle '21 and the arbor 11, viz., the work 24, the wormwheel 16, the plate 14 and the gear wheel 29, will be rotated. At thesame time, due to the cooperation of the gear wheel 29 and the rack 30,the carriage 12 and all the parts carried by it slide along on the base34, with the result that the work is properly presented to the cuttingtool.

I provide an adjustable support for the rack, separately shown in Figs.12 and 13, and comprising a capped standard 37, in which the rack isclamped by set-screws 50 and which has an arm 38 extending over the base34 and supported by a separate carriage 42 having a dovetail groovefitting over the tongue on the base 34, and provided with a set-screw 43for locking it in desired position on the base. The arm 38 of the racksupport has a small rectangular tongue fitting in a guide-groove at thetop of the rack-carriage 42 and has a long slot througl'l which passes abolt 41 tapped into the rackcarriage and operating to clamp theracksupport in desired position upon the rackcarriage. A further anddelicate adjustment of the rack in a longitudinal direction is providedby the screw 48 threaded into the end of the rack and fitted to rotateonly in a bracket 49 projecting rearwardly from the standard 37 of therack-support.

The rack is guided and held in engagement with the gear wheel 29 by aU-shaped adjustable support 35, having horizontal arms extending overthe base of the workcarriage 12, these arms being slotted to allow thenecessary movement of the support. The

bolts 36 screw into the base of the carriage 12 through the slots in thearms of the support 35 and are released to allow the support to beadjusted for gear wheels of different diameters, and when screwed downsecure the support in place.

In order to determine the adjustment of the work relative to a previousposition, I provide indexing holes 44 in the plate 14, and correspondingholes 45 adapted to register with them in one ofthe arms 19. An indexingkey 47 passes through the two holes 44 and 45, that are in register, andholds the index arm 19 and the plate 14 in fixed relation. All of theindexing holes 44 in the plate 14, except the one occupied by theindexing key 47 and the other objective holes, are filled with plugs 46(shown in detail in Fig. 8). The holes 44 are slightly countersunk andthe heads of the plugs are enlarged to fit therein flush with the top ofthe plate 14, and are of sufficient length to extend slightly beneaththe bottom of the plate so that they may be'easily removed by pressingthem up from beneath the table. The indexing holes 44 are so arrangedand numbered that the correct position of the work relative to a formerposition is easily determined therefrom. For example, suppose that it isdesired to out six rosettes on a cylinder, as is shown in' Figs. 5, 6and 7. After the first one is cut, the periphery must be turned just 60from its former position. First the plugs 46 are removed from theobjective holes 44 and then the clamping bolts 20 are loosened and theindexing key 47 removed and the worm turned. The worm wheel 16, theindexing arm 19, the carrier 22, the spindle 21 and the work are rotatedby the worm, but since the clamping bolts 20 are released, the plate 14and the gear wheel 29 do not rotate, and the carriage 12' is not moved.hen the indexing arm is carried around just 60, that is, until a hole 44is reached from which the plug was removed, the key 47 is againinserted, the clamping bolts 20 are again locked, and the work is readyfor the next operation. This provides a simple and absolutely reliablemeans of indexing.

In adjusting the work, for example after one or more rosettes have beencut or partly cut and the work has been removed and is reinserted,'ifthe position in which the work has been clamped does not afford aregister of ahole of the indexing arm 19 with a hole 44 of the plate 14,a very delicate adjustment can be obtained by means of the adjustingscrew 48 at the rear end of the rack. The set-screws 50 are unscrewed,thus releasing the rack in the standard 37, and the rack is adjusted bythe screw 48, thereby rotating the gear wheel 29 and hence the plate 14until the indexing holes register 1 and the key 47 can be inserted.

The supporting base 3% of my device is shown as secured to the table ofthe milling machine by bolts 51 having square heads fitting in theT-slot 52. Adjustment to and from the cutting tool is made by a feedscrew 5%, and vertical adjustment by a feed screw 55.

Some results of the operation of the machine are shown in Figs. 5, G and7, and Figs. 9, 10 and 11. These are male and female rollers which maybe used for rolling or fiuting circular rosettes in hair cloth and othermaterial. It is evident that a large variety of designs may be producedon metal, stone or wood.

As shown, each cylinder to be operated on is provided with a key-way,which fits over a corresponding key in the spindle 21 and thus holds thework securely to its place. If necessary, spacing blocks may be putabove and below the work, as shown, to assist in clamping it in place. Atool 31, having a single cutting tooth, such as is shown in Fig. 1, maybe used and in the ordinary manner shifted for each groove.

In the ope 'ation of cutting such a figure as one of the rosettes shownin Figs. 5 to 7 or 9 to 11, the work is advanced toward the cutting toolfor the proper depth of cut by the feed screw 5%, and is rolled beforethe cutting tool by the actuation of the worm 17. After the firstrosette is completed, the work is turned on its axis the proper numberof degrees, as above described, with reference to the indexing plate,and the cutting operation repeated. This is continued until the articleis completed.

It is obvious that various modifications may be made in theconstructions shown and above particularly described within theprinciple and scope of my invention.

I claim:

1. A machine for cutting figures on cylindrical work comprising, incombination with a revolving cutting tool, means for actuating the sameto delineate the desired figure in a plane, and means for imparting botha rotary movement and a substantially equal rectilinear movement to thework, whereby a cylindrical surface of the work is present ed at alltimes substantially in the plane of the cutting tool in operativerelation thereto.

2. A machine for cutting curvilinear figures on cylindrical workcomprising, in combination with a cutting tool revolving on a stationaryaxis, means for imparting both a rotary movement and a substantiallyequal rectilinear movement to the work, whereby a cylindrical surface ofthe work is presented at all times substantially in the plane of thecutting tool in operative relation thereto.

3. A machine for cutting figures on cylindrical work comprising, incombination I with a cutting tool, means for imparting a l rotarymovement to the work in operative relation to the tool, and means forcompounding the rotary movement with a bodily linear movement of thework, whereby a cylindrical surface of the work is presented at alltimes substantially in the plane of the cutting tool in operativerelation thereto.

4;. A machine for cutting curvilinear figures on cylindrical workcomprising, in combination with a cutting tool revolving on a stationaryaxis, means for imparting a rotary movement to the work in operativerelation to the 'tool, and means for bodily moving the work acorresponding distance along a plane substantially in the plane ofrotation of the tool.

5. A machine forcutting figures on cylindrical work comprising, incombination with a cutting tool revolving on a stationary axis, a wormand worm wheel for imparting a rotary movement to the work in operativerelation to the tool, and means for bodily moving the work acorresponding distance along a plane substantially in the plane ofrotation of the tool.

6. A machine for cutting figures on cylindrical work comprising, incombination with a cutting tool revolving on a stationary axis, a wormand worm wheel for rotating the cylindrical work in operative relationto the tool, a rack, and a gear wheel meshing therewith and concentricwith the work, the gear wheel being rotated with the work and adapted byits cooperation with the rack to bodily move the work a correspondingdistance.

7. A machine for cutting figures on cylindrical work comprising, incombination with a cutting tool revolving on a stationary axis, a wormand worm wheel for rotating the cylindrical work in operative relationto the tool, a gear wheel concentric with the work and rotatedtherewith, a rack adapted'to mesh with the gear wheel and adjustable toand from the axis of the gear wheel to. accommodate gears of differentdiameters, the gear wheel being adapted by its cooperation with the rackto bodily move the work a corresponding distance.

8. A machine for cutting figures 011 cylindrical work comprising, incombination with a cutting tool revolving on a stationary axis, anindexing plate for the Work, a worm and worm wheel for rotating thework, means for adjusting the work relatively to the indexing plate, andmeans for bodily moving the work a corresponding distance along a planesubstantially in the plane of rotation of the tool.

9. A machine for cutting figures on cylindrical work comprising, incombination with a cutting tool revolving on a stationary axis, a wormand worm wheel for rotating the work, an indexing plate for the work, 'agear wheel concentric with the work and rotated with the indexing plate,means for adjusting work, an indexing the work relative to the indexingplate, and a rack adapted to cooperate with the gear wheel andadjustable to and from the axis of the gear wheel to accommodate gearwiieels of different diameters, the gear wheel being adapted by itscooperation with the rack to move the axis of the work a correspondingdistance along a plane substantially in the plane of rotation of thetool.

10. A machine for cutting figures on cylindrical work comprising, incombination with a cutting tool revolving on a stationary axis, a wormand worm wheel for rotating the work, an indexing plate for the work, agear wheel concentric with the work and rotated with the indexing plate,means for adjusting the work relative to the indexing plate, a rackadapted to cooperate with the gear wheel, and means on the rack foradjusting the indexing plate relatively to the work, the gear wheelbeing adapted by its cooperation with the rack to move the work acorresponding distance along a plane substantially in the plane ofrotation of the tool.

11. A machine for cutting figures on cylindrical work comprising, incombination with a cutting tool revolving on a stationary axis, a wormand worm wheel for rotating the work, an indexing plate for the work, agear wheel concentric with the work and rotated with the indexing plate,means for adjusting the work relative to the indexing plate, a rackadapted to cooperate with the gear wheel and adjustable to and from theaxis of the gear wheel to accommodate gear wheels of differentdiameters, and means on the rack for adjusting the indexing platerelatively to the work, the gear wheel being adapted by its cooperationwith the rack to move the work table a corresponding distance along aplane substantially in the plane of rotation of the tool.

12. A machine for cutting figures on cylindrical work comprising, incombination with a cutting tool revolving on a stationary axis, a wormand worm wheel for rotating the plate for the work, means for adjustingthe work relative to the indexing plate, an indexing arm moved with thework, indexing holes in the indexing plate, and means for moving the wora corresponding distance along a plane substantially in the plane ofrotation of the tool.

13. In a machine for cutting figures on eylindrical work, an indexingplate having indexing holes therein, an indexing arm cooperatingtherewith, and removable plugs in the indexing holes of the table.

14:. A machine for cutting figures on cylindrical work comprising, incombination with a cutting tool revolving on a stationary axis, a wormand worm wheel for rotating the work, a rack with pitch planesubstantially parallel with the plane of rotation of the cutting tool, agear wheel rotated with the work and adapted to cooperate with the rackand roll the work before the cutting tool, and means for rotativelyadjusting the work relative to the gear wheel comprising a plate havingindexing holes therein, removable plugs in the holes, and an indexingarm moved with the work.

15. A machine for cutting figures on cylindrical work comprising, incombination with a cutting tool revolving on a stationary axis, alongitudinally-adjustable stationary rack extending substantiallyparallel to the plane of rotation of the cutting tool, an indexing platehaving indexing holes therein, removable plugs in the holes, means forrotating the work, an indexing arm coacting with the indexing plate, agear wheel rotated with the indexing plate and adapted to cooperatewit-h the rack and roll the work before the cutting tool, and means foradjusting the rack and thereby idjusting the indexing plate relative tothe indexing arm.

In testimony whereof I have aiiixed my signature in presence of twowitnesses.

CHARLES \VIEBKE. Witnesses BERNARD CownN, VICTOR D. BURST.

